每步都关键:PPR 管热熔连接工序分解​

2025-09-23

在塑料管道安装中,PPR管的热熔连接是确保管道系统安全可靠的关键环节。以下为您详细分解PPR管热熔连接的工序。

首先是准备工作。需确保管材与管件的规格、型号匹配,检查热熔工具是否正常工作,清洁管材与管件的连接部位,去除油污、杂质等。

接着进行切割。使用专用工具将管材切割成所需长度,切割面应垂直、平整,避免管材端口变形。

然后是标记。根据管件的承插深度,在管材上做好标记,以保证连接时的插入深度准确。

预热阶段。将热熔工具(如热熔机)通电预热至规定温度,一般为260℃左右(具体温度参照管材管件说明书)。

插入操作。当热熔工具达到温度后,迅速将管材与管件同时插入加热模头,插入时要保持管材与管件的轴线一致,避免倾斜。

加热时长。根据管材的壁厚和管径,控制加热时间。例如,对于常见的DN20管材,加热时间约为5秒;DN25管材,加热时间约7秒(具体时间依产品说明调整)。

连接固定。加热完成后,快速将管材插入管件至标记深度,插入过程中可轻微旋转管材(不超过1/4圈),以保证熔接均匀,然后保持固定,让其自然冷却,冷却时间根据管径大小而定,一般DN20 - DN32管材冷却时间不少于3分钟。

在整个热熔连接过程中,每一步都至关重要。操作人员需严格按照规范操作,注意温度、时间、插入深度等细节,这样才能确保PPR管热熔连接的质量,使管道系统长期稳定运行,避免渗漏等问题的发生。掌握这些工序要点,您就能在塑料管道安装中得心应手,打造出高质量的管道工程。



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